<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        function fn() {
            let sum = 0
            for (let i = 0; i < arguments.length; i++) {
                sum += arguments[i]
            }
            console.log(sum);
        }
        fn(1, 33, 6, 4, 6)
    </script>
</body>

</html>